import type { RerankerFn } from './types.js';
/**
 * True if a Transformers.js backend is importable. Note: this does NOT confirm
 * that the model is downloadable from Hugging Face CDN — in sandboxed
 * environments the package may import but the model fetch may be blocked.
 * The reranker silently falls back to identity ordering in that case.
 */
export declare function isCrossEncoderAvailable(): Promise<boolean>;
/** Track 2 reranker: MS-MARCO MiniLM cross-encoder, identity fallback if the model will not load. */
export declare const crossEncoderReranker: RerankerFn;
//# sourceMappingURL=cross-encoder.d.ts.map